Recent content by Viopia

I sometimes don't understand the answers. When this happens I try to say what does not make sense to me.

I am sorry the quote was not from you. I don't know how this couild have happened. I was trying to answer two questions close together and used the prompt after highlighting the part I wanted to answer.

No there isn't any light moving on the retina, just lke the Sun is not moving faster than the speed of light.

It is no wonder I needed time to digest what Bandersnatch said. I thought we were talking about real velocities. Ibix's comment about the Sun can be described in the following way:- As a you ''turn around'' the Sun does not circle you, you merely turn around so that the light hitting your...

I am still interested in any response to my question (*51) regarding the use of the word ''coordinate''.

Of course it applies to me. I havn't been able to adjust my logic yet but I may be abe to do so if I learn more. Have you adjusted your logic to understand quantum physics yet?

Don't you try to get your physics students to understand what the mathematics is telling them? To understand, your students will have to use their own logic, not your logic. When a subject cannot be logically understood, like in quantum physics, students have been told to ''shut up and...

If an astonaut is in orbit very close to a supermassive black hole, so he is not spaghettified, his time will be runnng very slowly form the Earth's frame of reference. When you use the word ''coordinate'' do you mean that the astronaut's frame of reference is one coordinate and the Earth's...

Thanks for your forebearance. I know that professional cosmologists and physicists, who spend all their time studying these subjects, are bound to know far more about these things than me. The only way I can try to understand these concepts is by challenging you to explain them in a way which...

I would be interested to now how it has been tested. Thanks.

Most people would define speed as the distance traveled divided by the time it takes to travel that distance eg: d/t. I don't know anyone who would define speed as the rate of change of the distance not yet covered. I think this strange reasoning, and the associated complicated mathematics it...

I would like to remind you of what Bandersnach said earlier in this thread, ie: ''For a photon, while locally it always moves at c, it can have any approach velocity whatsoever - including 0 and negative, i.e. being 'stopped' or carried away by expansion despite being sent towards us''. This...

Space (itself) expanding would permeate the whole of the Universe. If the incoming photons from the supernova were reduced in speed when they hit the Earth because of 'catch up' the only way the photons could actually hit the Earth at the speed of light is if the space (itself) expanding was...

It makes little sense because it's hard to believe that the ''space (itself) expanding'' would suddenly slow down and freeze to satisfy most scientists notion of locality.